562 lines
16 KiB
C
562 lines
16 KiB
C
/*
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* GDI brush objects
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*
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* Copyright 1993, 1994 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdarg.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "gdi_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gdi);
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/* GDI logical brush object */
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typedef struct
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{
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GDIOBJHDR header;
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LOGBRUSH logbrush;
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struct brush_pattern pattern;
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} BRUSHOBJ;
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#define NB_HATCH_STYLES 6
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static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc );
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static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer );
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static BOOL BRUSH_DeleteObject( HGDIOBJ handle );
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static const struct gdi_obj_funcs brush_funcs =
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{
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BRUSH_SelectObject, /* pSelectObject */
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BRUSH_GetObject, /* pGetObjectA */
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BRUSH_GetObject, /* pGetObjectW */
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NULL, /* pUnrealizeObject */
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BRUSH_DeleteObject /* pDeleteObject */
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};
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/* fetch the contents of the brush bitmap and cache them in the brush pattern */
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static BOOL store_bitmap_bits( struct brush_pattern *brush, BITMAPOBJ *bmp )
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{
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const struct gdi_dc_funcs *funcs = get_bitmap_funcs( bmp );
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struct gdi_image_bits bits;
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struct bitblt_coords src;
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BITMAPINFO *info;
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if (!(info = HeapAlloc( GetProcessHeap(), 0, FIELD_OFFSET( BITMAPINFO, bmiColors[256] ))))
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return FALSE;
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src.visrect.left = src.x = 0;
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src.visrect.top = src.y = 0;
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src.visrect.right = src.width = bmp->bitmap.bmWidth;
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src.visrect.bottom = src.height = bmp->bitmap.bmHeight;
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if (funcs->pGetImage( NULL, brush->bitmap, info, &bits, &src ))
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{
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HeapFree( GetProcessHeap(), 0, info );
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return FALSE;
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}
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/* release the unneeded space */
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HeapReAlloc( GetProcessHeap(), HEAP_REALLOC_IN_PLACE_ONLY, info,
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get_dib_info_size( info, DIB_RGB_COLORS ));
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brush->info = info;
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brush->bits = bits;
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brush->usage = DIB_RGB_COLORS;
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return TRUE;
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}
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static BOOL copy_bitmap( struct brush_pattern *brush, HBITMAP bitmap )
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{
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BITMAPINFO *info;
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BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
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if (!bmp) return FALSE;
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if (!bmp->dib)
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{
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if ((brush->bitmap = CreateBitmap( bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
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bmp->bitmap.bmPlanes, bmp->bitmap.bmBitsPixel, NULL )))
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{
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if (bmp->funcs->pCopyBitmap( bitmap, brush->bitmap ))
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{
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BITMAPOBJ *copy = GDI_GetObjPtr( brush->bitmap, OBJ_BITMAP );
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copy->funcs = bmp->funcs;
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GDI_ReleaseObj( copy );
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}
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else
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{
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DeleteObject( brush->bitmap );
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brush->bitmap = 0;
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}
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}
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GDI_ReleaseObj( bitmap );
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return brush->bitmap != 0;
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}
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info = HeapAlloc( GetProcessHeap(), 0,
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get_dib_info_size( (BITMAPINFO *)&bmp->dib->dsBmih, DIB_RGB_COLORS ));
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if (!info) goto done;
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info->bmiHeader = bmp->dib->dsBmih;
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if (info->bmiHeader.biCompression == BI_BITFIELDS)
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memcpy( &info->bmiHeader + 1, bmp->dib->dsBitfields, sizeof(bmp->dib->dsBitfields) );
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else if (info->bmiHeader.biClrUsed)
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memcpy( &info->bmiHeader + 1, bmp->color_table, info->bmiHeader.biClrUsed * sizeof(RGBQUAD) );
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if (!(brush->bits.ptr = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage )))
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{
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HeapFree( GetProcessHeap(), 0, info );
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goto done;
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}
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memcpy( brush->bits.ptr, bmp->dib->dsBm.bmBits, info->bmiHeader.biSizeImage );
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brush->bits.is_copy = TRUE;
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brush->bits.free = free_heap_bits;
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brush->info = info;
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brush->usage = DIB_RGB_COLORS;
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done:
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GDI_ReleaseObj( bitmap );
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return brush->info != NULL;
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}
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BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern )
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{
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HGLOBAL hmem = 0;
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pattern->bitmap = 0;
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pattern->info = NULL;
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pattern->bits.free = NULL;
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switch (brush->lbStyle)
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{
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case BS_SOLID:
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case BS_HOLLOW:
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return TRUE;
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case BS_HATCHED:
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if (brush->lbHatch > HS_DIAGCROSS)
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{
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if (brush->lbHatch >= HS_API_MAX) return FALSE;
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brush->lbStyle = BS_SOLID;
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brush->lbHatch = 0;
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}
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return TRUE;
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case BS_PATTERN8X8:
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brush->lbStyle = BS_PATTERN;
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/* fall through */
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case BS_PATTERN:
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brush->lbColor = 0;
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return copy_bitmap( pattern, (HBITMAP)brush->lbHatch );
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case BS_DIBPATTERN:
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hmem = (HGLOBAL)brush->lbHatch;
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if (!(brush->lbHatch = (ULONG_PTR)GlobalLock( hmem ))) return FALSE;
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/* fall through */
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case BS_DIBPATTERNPT:
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pattern->usage = brush->lbColor;
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pattern->info = copy_packed_dib( (BITMAPINFO *)brush->lbHatch, pattern->usage );
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if (hmem) GlobalUnlock( hmem );
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if (!pattern->info) return FALSE;
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pattern->bits.ptr = (char *)pattern->info + get_dib_info_size( pattern->info, pattern->usage );
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brush->lbStyle = BS_DIBPATTERN;
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brush->lbColor = 0;
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return TRUE;
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case BS_DIBPATTERN8X8:
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case BS_MONOPATTERN:
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case BS_INDEXED:
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default:
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WARN( "invalid brush style %u\n", brush->lbStyle );
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return FALSE;
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}
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}
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void free_brush_pattern( struct brush_pattern *pattern )
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{
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if (pattern->bits.free) pattern->bits.free( &pattern->bits );
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if (pattern->bitmap) DeleteObject( pattern->bitmap );
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HeapFree( GetProcessHeap(), 0, pattern->info );
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}
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BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void **bits, UINT *usage )
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{
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BRUSHOBJ *brush;
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BOOL ret = FALSE;
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if (!(brush = GDI_GetObjPtr( handle, OBJ_BRUSH ))) return FALSE;
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if (!brush->pattern.info)
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{
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BITMAPOBJ *bmp = GDI_GetObjPtr( brush->pattern.bitmap, OBJ_BITMAP );
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if (bmp)
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{
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store_bitmap_bits( &brush->pattern, bmp );
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GDI_ReleaseObj( brush->pattern.bitmap );
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}
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}
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if (brush->pattern.info)
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{
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memcpy( info, brush->pattern.info, get_dib_info_size( brush->pattern.info, brush->pattern.usage ));
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if (info->bmiHeader.biBitCount <= 8 && !info->bmiHeader.biClrUsed)
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fill_default_color_table( info );
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*bits = brush->pattern.bits.ptr;
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*usage = brush->pattern.usage;
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ret = TRUE;
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}
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GDI_ReleaseObj( handle );
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return ret;
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}
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/***********************************************************************
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* CreateBrushIndirect (GDI32.@)
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*
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* Create a logical brush with a given style, color or pattern.
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*
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* PARAMS
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* brush [I] Pointer to a LOGBRUSH structure describing the desired brush.
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot be
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* created.
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*
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* NOTES
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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* - Windows 95 and earlier cannot create brushes from bitmaps or DIBs larger
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* than 8x8 pixels. If a larger bitmap is given, only a portion of the bitmap
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* is used.
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*/
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HBRUSH WINAPI CreateBrushIndirect( const LOGBRUSH * brush )
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{
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BRUSHOBJ * ptr;
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HBRUSH hbrush;
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if (!(ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(*ptr) ))) return 0;
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ptr->logbrush = *brush;
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if (store_brush_pattern( &ptr->logbrush, &ptr->pattern ) &&
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(hbrush = alloc_gdi_handle( &ptr->header, OBJ_BRUSH, &brush_funcs )))
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{
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TRACE("%p\n", hbrush);
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return hbrush;
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}
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free_brush_pattern( &ptr->pattern );
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HeapFree( GetProcessHeap(), 0, ptr );
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return 0;
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}
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/***********************************************************************
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* CreateHatchBrush (GDI32.@)
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*
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* Create a logical brush with a hatched pattern.
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*
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* PARAMS
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* style [I] Direction of lines for the hatch pattern (HS_* values from "wingdi.h")
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* color [I] Colour of the hatched pattern
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateHatchBrush( INT style, COLORREF color )
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{
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LOGBRUSH logbrush;
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TRACE("%d %06x\n", style, color );
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logbrush.lbStyle = BS_HATCHED;
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logbrush.lbColor = color;
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logbrush.lbHatch = style;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreatePatternBrush (GDI32.@)
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*
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* Create a logical brush with a pattern from a bitmap.
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*
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* PARAMS
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* hbitmap [I] Bitmap containing pattern for the brush
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreatePatternBrush( HBITMAP hbitmap )
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{
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LOGBRUSH logbrush = { BS_PATTERN, 0, 0 };
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TRACE("%p\n", hbitmap );
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logbrush.lbHatch = (ULONG_PTR)hbitmap;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateDIBPatternBrush (GDI32.@)
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*
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* Create a logical brush with a pattern from a DIB.
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*
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* PARAMS
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* hbitmap [I] Global object containing BITMAPINFO structure for the pattern
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* coloruse [I] Specifies color format, if provided
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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* - This function is for compatibility only. CreateDIBPatternBrushPt() should
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* be used instead.
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*/
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HBRUSH WINAPI CreateDIBPatternBrush( HGLOBAL hbitmap, UINT coloruse )
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{
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LOGBRUSH logbrush;
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TRACE("%p\n", hbitmap );
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logbrush.lbStyle = BS_DIBPATTERN;
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logbrush.lbColor = coloruse;
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logbrush.lbHatch = (ULONG_PTR)hbitmap;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateDIBPatternBrushPt (GDI32.@)
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*
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* Create a logical brush with a pattern from a DIB.
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*
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* PARAMS
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* data [I] Pointer to a BITMAPINFO structure and image data for the pattern
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* coloruse [I] Specifies color format, if provided
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateDIBPatternBrushPt( const void* data, UINT coloruse )
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{
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const BITMAPINFO *info=data;
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LOGBRUSH logbrush;
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if (!data)
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return NULL;
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TRACE("%p %dx%d %dbpp\n", info, info->bmiHeader.biWidth,
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info->bmiHeader.biHeight, info->bmiHeader.biBitCount);
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logbrush.lbStyle = BS_DIBPATTERNPT;
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logbrush.lbColor = coloruse;
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logbrush.lbHatch = (ULONG_PTR)data;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateSolidBrush (GDI32.@)
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*
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* Create a logical brush consisting of a single colour.
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*
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* PARAMS
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* color [I] Colour to make the solid brush
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*
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* RETURNS
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* A handle to the newly created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateSolidBrush( COLORREF color )
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{
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LOGBRUSH logbrush;
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TRACE("%06x\n", color );
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logbrush.lbStyle = BS_SOLID;
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logbrush.lbColor = color;
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logbrush.lbHatch = 0;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* SetBrushOrgEx (GDI32.@)
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*
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* Set the brush origin for a device context.
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*
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* PARAMS
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* hdc [I] Device context to set the brush origin for
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* x [I] New x origin
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* y [I] New y origin
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* oldorg [O] If non NULL, destination for previously set brush origin.
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*
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* RETURNS
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* Success: TRUE. The origin is set to (x,y), and oldorg is updated if given.
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*/
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BOOL WINAPI SetBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
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{
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DC *dc = get_dc_ptr( hdc );
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if (!dc) return FALSE;
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if (oldorg)
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{
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oldorg->x = dc->brushOrgX;
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oldorg->y = dc->brushOrgY;
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}
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dc->brushOrgX = x;
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dc->brushOrgY = y;
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release_dc_ptr( dc );
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return TRUE;
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}
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/***********************************************************************
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* FixBrushOrgEx (GDI32.@)
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*
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* See SetBrushOrgEx.
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*
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* NOTES
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* This function is no longer documented by MSDN, but in Win95 GDI32 it
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* is the same as SetBrushOrgEx().
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*/
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BOOL WINAPI FixBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
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{
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return SetBrushOrgEx(hdc,x,y,oldorg);
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}
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/***********************************************************************
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* BRUSH_SelectObject
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*/
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static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc )
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{
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BRUSHOBJ *brush;
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HGDIOBJ ret = 0;
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DC *dc = get_dc_ptr( hdc );
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if (!dc)
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{
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SetLastError( ERROR_INVALID_HANDLE );
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return 0;
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}
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if ((brush = GDI_GetObjPtr( handle, OBJ_BRUSH )))
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{
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PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSelectBrush );
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HBITMAP bitmap = brush->pattern.bitmap;
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BITMAPINFO *info;
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void *bits;
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UINT usage;
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if (bitmap && !brush->pattern.info)
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{
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BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
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/* fetch the bitmap bits if we are selecting into a different type of DC */
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if (bmp && bmp->funcs != physdev->funcs) store_bitmap_bits( &brush->pattern, bmp );
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GDI_ReleaseObj( bitmap );
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}
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info = brush->pattern.info;
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bits = brush->pattern.bits.ptr;
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usage = brush->pattern.usage;
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GDI_inc_ref_count( handle );
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GDI_ReleaseObj( handle );
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if (!physdev->funcs->pSelectBrush( physdev, handle, bitmap, info, bits, usage ))
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{
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GDI_dec_ref_count( handle );
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}
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else
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{
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ret = dc->hBrush;
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dc->hBrush = handle;
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GDI_dec_ref_count( ret );
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}
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}
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release_dc_ptr( dc );
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return ret;
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}
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|
|
/***********************************************************************
|
|
* BRUSH_DeleteObject
|
|
*/
|
|
static BOOL BRUSH_DeleteObject( HGDIOBJ handle )
|
|
{
|
|
BRUSHOBJ *brush = free_gdi_handle( handle );
|
|
|
|
if (!brush) return FALSE;
|
|
free_brush_pattern( &brush->pattern );
|
|
return HeapFree( GetProcessHeap(), 0, brush );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* BRUSH_GetObject
|
|
*/
|
|
static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer )
|
|
{
|
|
BRUSHOBJ *brush = GDI_GetObjPtr( handle, OBJ_BRUSH );
|
|
|
|
if (!brush) return 0;
|
|
if (buffer)
|
|
{
|
|
if (count > sizeof(brush->logbrush)) count = sizeof(brush->logbrush);
|
|
memcpy( buffer, &brush->logbrush, count );
|
|
}
|
|
else count = sizeof(brush->logbrush);
|
|
GDI_ReleaseObj( handle );
|
|
return count;
|
|
}
|